Transmitter and code translator



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TRANSMITTER AND CODE TRANSLATOR Original Filed May '7, 1931 17 Sheets-Sheet 17 INVENTOR AT RNEY Patented Jan. 3, 1939 UNITED STATES TRANSMITTER AND CODE TRANSLATOR Original application May 7, 1931, Serial No. 535,672. Divided and this application August 1, 1935, Serial No. 34,287. Renewed September 10 Claims.

This invention relates to a transmitter and code translator for transmitting impulses from a central transmitting station to a plurality of receivers located at subscribers stations to control the setting up of information relating to stocks or other items.

This application is a division of a joint application of Merton L. Haselton and Raymond M. Hicks, Ser. No. 535,672, filed May 7, 1931.

Among the objects of this invention is the pro vision of mechanism for transmitting under key or other known forms of control, impulses characterizing stock quotations or other items, to distant receiving stations including equipment l5 adapted under control of said impulses to set up information according to the keys depressed or other control set-up, the provision of translating mechanism for translating one, two or three stock letter abbreviations intonumbers, for storing stock numbers, price and range information, for storing information as to a stock quotation as previously stored information in reference to another stock quotation is transmitted, to provide for the alternate use and operation of said storage mechanism, to provide a dual system of transmission, to provide for control of each system by a plurality of operators, to provide for flexibility in assignment of stocks to said systems, to provide channeling mechanism for controlling the alternate transmission from the keyboards of each system, to provide improved transmitting mechanism and controlling mechanism, and generally to provide improved, reliable and high speed mechanism for carrying out the functions of the mechanism herein disclosed and coming within the scope of this invention.

Other objects will become apparent from a study of the description in connection with the accompanying drawings, in which Fig. 1 is a diagrammatic showing of the mechanisms of a dual transmitting system;

Fig. 2 is a schematic showing of the keyboard for controlling the embodiment of the invention herein disclosed;

Figs. 3 to 15 constitute a complete wiring diagram of the L B system indicated in Fig. 1;

Of these figures, Fig. 3 is a diagram of the first letter key relay groups and the ground con- 50 trol relay group;

Fig. 4 is a wiring diagram of the second and third letter key rel-ay groups;

Fig. 5 is a wiring diagram of the first letter relays in the translator and certain of the stock PATENT OFFICE Fig. 5a is a table of the stock letters and the corresponding number design-ation;

Figs. 6 and 7 show certain of the second letter relays in the translator and certain of the lines grounded in the third letter key relay groups; 5

Fig. 8 shows certain of the multiple terminal blocks, master terminal blocks, and the preferred relays;

Fig. 9 shows one set of stock number storage relays; l0

Fig. 10 shows one set of price digit and range storage relays;

Fig. l1 shows a second set of stock number storage relays;

Fig. 12 shows a second set of price digit and l5 range storage relays;

Fig. 13 shows one set of transmitter units for the range, hundreds stock number, tens stock number, and units stock number;

Fig. 14 shows diagrammatically the hundreds, 20 tens, units and fractions price restoration and actuation transmission units, and hundreds, tens, units and fractions price number transmitting units of a second set;

Fig. l5 shows a wiring diagram of the syn- 25 chronizing and Wipe out relay group and the switching control relay group;

Fig. 16 shows a wiring diagram of the channeling mechanism; and

Fig. 17 shows a multiple line repeater. 30

GENERAL The invention is described in connection with a specic form of equipment disclosed in the drawings which constitutes one suitable form of 35 embodiment of the invention.

The function of the teleregister transmitting equipment disclosed is to transform a stock quotation as written on a keyboard into electrical impulses which, in the particular embodiment 40 disclosed, are transmitted over four trunk lines, Fig. l, to repeater stations. The quotation consists of a letter abbreviation of a stock, a price, and a range in which the price is to be quoted. The stock abbreviation and the price may be 45 taken from a ticker tape, and the range as posted during market hours is governed by the previous prices during the current day of the particular stock involved.

'I'he electrical impulses are retransmitted from 50 the repeater stations to subscribers installations where they operate selector cabinets, the selector cabinets in turn select a stock and acuate the indicators in the teleregister boards. Subscribers installations or receiving systems of the general type shown in the application for Letters Patent of the United States of Merton L. Haselton and Page S. Haselton for Electrical in dicating systems, Serial No. 256,160 filed Feb. 23, 1928, Patent No. 1,890,878 dated Dec. 13, 1932, may be controlled by a transmitting equipment of the type herein described.

The transmitting and receiving systems may be arranged in units designed to quote a maximum of a thousand stocks each. For the purpose of introducing greater speed in the operation of the system two sets of equipment are provided making the total capacity of the system two thousand stocks. These sets of equipment are designated for purposes of identification as right front R F and left back L B, Fig. 1, respectively. The stocks to be quoted are divided into two groups and the rst letter of the stock abbreviation determines the group in which the stock is posted. The stocks which have for their rst letter of abbreviation theV letters from A to J may be transmitted on the R F system, and the remainder of the stocks, namely, those whose abbreviations begin with K to Z may be posted on the L B system. This point of division between the systems is arbitrary and is determined by the number of stocks and the activity of the stocks falling in different parts of the alphabet.

Principles of transmitter operation The transmission of a stock quotation is divided into three operationsstock selection, restoration of the stock selected, and actuation of the stock selected. The stock letter abbreviation as recorded on the keyset in Fig. 2 is stored in letter relay groups, Figs. 3 and 4, and is then translated into a three digit stock code number by the mechanism shown in Figs. 5, 6 and 7. After translation the code number isstored in one of the stock number relay groups, Figs. 9 and 11, .and is ready for transmission.

The stock prices are recorded in one of the number key relay groups and the range is stored in one of the range key relay groups, as sho-wn in Figs. 10 and 12. These stored combinations of information'are then held in readiness for transmission in the proper sequence. The number of impulses sent out is governed by the -particular combinations which are stored and is controlled by the transmission units, Figs. 13 and V14. Pulses are constantly available from an impulse machine, and the transmission unit closes the circuit to the line from the pulse machine and, after a suiicient number of pulses have been sent, cuts oi the pulses from the line. The operations involved therefore include the storage of the key depressions in each of several relay groups; the translation of the stock letters into a stock code number and the storage of this code number; and the transmission of pulses the number of which is determined by the combinations set up in the storage relays.

The mechanism disclosed may be divided into four units, namely, the key set, the translator, the transmitter, and the impulse generator.

CIRCUIT OPERATION The description of circuit operation which follows is given for the L B system only, but, by the substitution of the proper rst letters of the stock abbreviations this description is applicable to the R F system.

Operation of the keyset When the operator depresses a key in the keyset, Fig. 2, a combination of grounds is connected to the transmitter as follows:

Key depressions in keyset Connects ground to leads Group 1 Group 2 Group 3 A J' S K-l and K-2 B K T K-l and K-3 C L U K-l and K-4 D M V K-2 and K-3 E N W K-Z and K-4 F O X K--3 and K-4 G P Y K-l H Q Z K-2 I R K-S Connects ground Group 4 to-leads 1 K-Z and K-Z 2 K-l and K3 3 K-l and K-4 4 K-Z and K-3 5 K-2 and K-4 6 K-S and K-4 7 K-l 8 K-Z 9 K-3 0 K1 and K- B1 K-Z and K-5 NR K-5 Connects ground Group 5 to leads LA K-l and K-2 LL K-l and K-S HL K-l and K-4 LO K-2 and K-S HI K-Z and K-4 OP K-B and K-4 UN K-l YCL K-2 WO K- and WO lead Depression of any one of the other keys, SYN, ERR, Z-PF and l-PF, puts a ground on an individual lead to the transmitter.

Operation of the letter key relays and the ground control relays When the transmitter is normal before the operator starts to write a quotation the B relay in each of the two rst letter key relay groups, Fig. 3, is operated. The first letter key relay group (J-R) I is shown in detail. All of the other letter key relay groups are of identical construction.

The circuit of the B relay in group J-R(l) is as follows: Ground from the break contacts erf on the ER relay in the switching control relay group, Fig. 15, is connected through the break contacts on the LR relay in the switching control relay group to line g and extends in Fig. 3 through the break contact on the S-l relay in the ground control relay group to the ground in line GI(JR) l o1" the first letter key relay group and through the break contact on the A relay in the J-R(l) rst letter key relay group to one terminal of the winding of the B relay to the other terminal of which battery and ground are connected.

The B relay, Fig. 3, in the S-Z(I) rst letter key relay group is operated from the same ground through the break Contact on the J-I relay in the ground control relay group, over ground in line GI(SZ)I and through the break contact on the A relay in the S-Z(l) first letter key relay group to the winding of the B relayin that group. s

Grounds from the keys in the keyset, Fig. 2, are connected through the make contacts of the B relays, Fig. 3, in the rst letter key relay groups to the windings of the storage relays in the groups to operate them. These grounds do not operate the relays in the second and third letter key relay groups, Fig. 4, because the B relays in these groups are not operated.

When one or two relays in the rst letter key relay group J-R(I) operate, a ground which is supplied from the ground in line GI(J-R)I to that group is connected as shown in Fig. 3 over the contacts of the various relays to one of nine outgoing leads. There is one of these leads for each letter which is recorded in that particular group. The combinations of relays which are operated for the various letters in the various letter key relay groups are as follows:

While the operator holds down the key in the keyset the A relay in the first letter key relay group J-R(I) is kept unoperated since it has ground on both sides of its winding but when the operator releases the key, one of these grounds is removed and the A relay operates in series with the storage relay or relays which are operated in that group. If two storage relays are operated, the A relay operates in a series parallel circuit, the A relay being in series with the two storage relays which are in parallel. The ground which operates the A relay and keeps it and the storage relays locked up is ground in line GIG-R.) I to the relay group.

The operation of the A relay in the first letter key relay group J-R( I) inserts a suitable resistance in the operating circuit of the B relay of that group, reducing the current through the B relay winding below its minimum holding value, so that the B relay releases.

When the A relay in the rst letter key relay group J-R(I) operates, it puts a ground on the ground ou lead GCU-R) I and operates the J-I relay in the ground control relay group. When the A relay in the first letter key relay group S-Z(I) operates it puts ground on the ground out lead GO(S-Z)I and operates the S-I relay in the ground control relay group.

The operation of the J-I or the S-I relay cuts oir the ground in to the first letter key relay group which was not used and releases the B relay in that group. Thus, if the rst letter is recorded in the J-R(I) rst letter key relay group, the operation of the J-I relay cuts off the ground in to the S--Z(I) rst letter key relay group and vice versa. Ground in remains on the group which is in use and keeps the A relay and its series relay or relays C to H operated. It also keeps a ground on the proper outgoing lead from this group,

The operation of the J-I or the S-I relay in the ground control relay group puts ground in to al1 of the second letter key relay groups AA--I (2), J-R(2) and S-Z(2), Fig. 4, and operates the B relays in all of these groups.

The circuit for the A-I(2) second letter key relays, Fig. 4, is as follows: Ground from the break contacts on the ER relay in the switching control relay group, Fig. l5, is connected through the break contacts on the LR relay in the switching control group to line g as before, and continues through the make contact on the J-I or S-I relay in the ground control relay group, Fig. 3, over line II, through the upper break contact I2 on the J-Z relay, and through a break contact I3 on the S-2 relay to the ground in line GMA-I 2 for the A--I (2) second letter key relays, Fig. 4.

The circuit for ground in to the J-R(2) second letter key relays, Fig. 4, is similar to that for the AI 2 second letter key relays except that the ground from the make contact of the J--I or S-I relay in the ground control relay group, Fig. 3, is connected through break contact I4 on the S-2 relay and the break contact I5 on the A-2 relay to the ground in line GI(J-R)2 for the J--R(2) second letter key relay group, Fig. 4.

The circuit for the S-Z(2) second letter key relay group Fig. 4 diiers from the two previous circuits in that it is connected through break contact I6 on relay J-Z and break contact I'I on relay A-2 in the ground control group, Fig. 3, to the ground in line GUS-ZH for the S-Z(2) second letter key relay group, Fig. 4.

The operation of either the J-I or the S-I relay connects a ground through its make contact and line I I out of this group to the switching control relay group, Fig. l5, to supply ground in to the tens number key relay groups, Figs. 10 and l2, as will be described later. Therefore, if the stock abbreviation contains but one letter, the number key relay groups will be prepared to receive the stock price write up.

A key depression of a second letter operates one or two storage relays in one of the second letter key relay groups, Fig. 4. The operation is similar to that of the irst letter key relays, Fig. 3, and when the operator releases the key in the keyset, a ground is connected to one of the outgoing letter leads.

Ground outoverlines GO(A-I 2,GO (J-R) 2 or GO(S-Z)2 of the second letter lay group, Fig. 4, operates the A-2, J-2 or S-Z relay in the ground control relay group, Fig. 3. If the second letter is recorded in the A-I (2) second letter group, the A-2 relay operates; if it is recorded in the J--R(2) group, the J-2 relay operates; and if it is recorded in the S-Z(2) group the S-2 relay operates.

The operation of the A-2, 5 2 or S-2 relay removes the ground in from the two second letter key relay groups which were not used to record the second letter, and releases the B relays in those groups. The operation of the A-2, J-2 or S-2 relays also connects ground in GMA-1) (J--R) S(-Z)3 to all of the third letter relay groups, Fig. 4. The circuit is as follows: Ground from the break contacts on the ER relay in the switching control relay group, Fig. l5, through the break contacts on the LR relay in the switching control relay group, Fig. l5, over line g, through the make contact on the A-2, J-Z or S-Z relays, Fig. 3, to ground in GMA-I) (J-R) (S-Z)3 to all of the third letter key relay groups.

The operation of the third letter key relay groups A-I 3), J-R(3) and S-Z 3), Fig. 4,

key re- 

